Independent ink feeding and ink stringing driving device for curved surface cup printing machine

Abstract

The utility model discloses a kind of ink feeding and ink stringing independent driving device of curved surface printing cup machine, belong to printing equipment technical field.The utility model includes ink feeding roller, ink groove, ink scraping structure, ink feeding roller driving device, ink roller group and ink stringing roller driving device;Ink roller group includes ink receiving roller, ink stringing roller, ink pressing roller, plate pressing roller;Ink feeding roller is rotated by ink feeding roller driving device alone drive, ink stringing roller is driven to realize axial reciprocating translation by ink stringing roller driving device, ink scraping structure reciprocates ink scraping in ink groove.The utility model drives ink feeding and ink stringing separately, can stop ink feeding roller rotation when not needing ink supply, avoid ink feeding roller idle running friction wear;Ink feeding rotating speed, ink stringing frequency can be regulated respectively, ink supply is stable, prolongs rubber roller service life, improves curved surface cup body printing quality.

Description

Technical Field

[0001] This utility model relates to an ink feeding device, and more particularly to an independent drive device for ink feeding and ink transfer in a curved surface printing cup machine, belonging to the field of printing equipment technology. Background Technology

[0002] Curved surface cup printing machines are specialized equipment for custom pattern printing on the curved surfaces of paper cups, plastic cups, and glass cups. They are widely used in daily packaging, beverage supplies, and cultural and creative products. The ink supply system is the core working mechanism of the curved surface cup printing machine. It mainly uses ink delivery rollers to quantitatively deliver ink, and in conjunction with the axial movement and circumferential rotation of the ink distribution rollers, it achieves uniform spreading, mixing, and homogenization of the ink. This ensures the color uniformity, pattern clarity, and printing consistency of the curved surface of the cup. The stability of the ink supply system directly determines the finished product printing quality and the service life of the equipment.

[0003] In existing equipment, the ink delivery roller and the ink transfer roller are driven in a linked manner, operating synchronously. During the printing process, even when ink supply is not required, the ink delivery roller continues to rotate along with the ink transfer roller. This constant friction between the ink delivery roller and the ink and adjacent rollers not only accelerates roller wear and shortens the lifespan of the rubber rollers, but also easily causes ink overheating and unstable ink layer conditions, ultimately affecting print quality. Therefore, there is an urgent need to propose a device that allows for independent driving of the ink delivery and ink transfer rollers to address these shortcomings. Utility Model Content

[0004] The purpose of this invention is to provide an independent drive device for ink feeding and ink transfer in a curved surface printing cup machine, addressing the existing technological situation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An independent drive device for ink feeding and ink transfer in a curved surface printing cup machine includes an ink feeding roller, an ink trough, a scraper structure, an ink feeding roller drive device, an ink roller assembly, and an ink transfer roller drive device. The ink roller assembly includes a receiving roller, an ink transfer roller, a pressing roller, and a pressure roller arranged parallel to each other. The ink feeding roller drive device is connected to the end of the ink feeding roller and drives it to rotate; the ink transfer roller drive device drives the ink transfer roller to perform a reciprocating translational motion; there is no mechanical transmission coupling between the ink feeding roller drive device and the ink transfer roller drive device, and the rotational ink supply action of the ink feeding roller and the axial ink transfer action of the ink transfer roller are decoupled and not bound to each other; the scraper structure performs a reciprocating scraping action in the ink trough.

[0006] Preferably, the ink-dispensing roller drive device includes an ink-dispensing drive motor, a turntable, a connecting rod, and a connecting plate; the output shaft of the ink-dispensing drive motor is fixedly connected to the center of the turntable, one end of the connecting rod is eccentrically hinged to the eccentric position of the turntable, and the other end of the connecting rod is hinged to the connecting plate, which is fixedly sleeved on the end of the ink-dispensing roller body; the ink-dispensing drive motor drives the turntable to rotate, the connecting rod is eccentrically connected to the turntable, and the connecting plate is connected to the ink-dispensing roller; the ink-dispensing drive motor converts the rotational motion of the turntable into the axial reciprocating translation of the ink-dispensing roller through the turntable-eccentric connecting rod-connecting plate; this ink-dispensing roller drive device only outputs axial pushing and pulling power and does not drive the circumferential rotation of the ink-dispensing roller; the connecting rod drives the connecting plate to perform translational reciprocating motion.

[0007] Preferably, the ink scraping structure includes a cylinder, a push rod, and a scraper connected in sequence; the cylinder body is fixed to the frame, the output end of the push rod is fixedly connected to the scraper, and the cylinder drives the scraper to perform linear reciprocating motion through the push rod.

[0008] The beneficial effects of this utility model are: 1. This device employs two independent drive mechanisms for the ink delivery roller and the ink transfer roller. The rotational ink delivery roller supplies ink, while the axial ink transfer roller operates independently. When ink supply is not required, the rotation of the ink delivery roller can be stopped, avoiding roller wear caused by continuous idling, extending the service life of the rubber roller, reducing ink friction, heat generation, and deterioration, and resulting in more stable ink layer quality.

[0009] 2. The ink feeding and ink flow actions can be controlled separately. The ink feeding speed, ink flow stroke and flow frequency can be adjusted separately according to different printing processes. The process adjustment is flexible and adaptable to various curved cup printing conditions.

[0010] 3. The ink roller drive device adopts an eccentric linkage mechanism of motor-turntable-connecting rod-connecting plate. It has a simple and reliable structure, can stably output axial reciprocating motion, has few transmission parts, is easy to maintain, and ensures smooth ink flow.

[0011] 4. The scraper structure can keep the ink surface in the ink trough flat, inhibit ink drying and accumulation, ensure uniform ink pick-up by the ink delivery roller, and reduce printing ink streaks and missing print defects. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the ink roller drive device.

[0014] Figure 3 This is a schematic diagram of the ink roller assembly.

[0015] Figure 4 This is a schematic diagram of the ink scraping mechanism.

[0016] In the diagram: 1-Ink trough, 2-Scraper structure, 3-Ink feed roller drive device, 4-Ink roller group, 5-Ink series roller drive device, 6-Ink feed roller, 7-Ink receiving roller, 8-Ink series roller, 9-Ink pressure roller, 10-Plate pressure roller, 11-Ink series drive motor, 12-Connecting rod, 13-Connecting plate, 14-Turntable, 16-Cylinder, 17-Push rod, 18-Scraper blade. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings.

[0018] like Figures 1-4 As shown: An independent driving device for ink feeding and ink transfer in a curved surface printing cup machine includes an ink feeding roller 6, an ink trough 1, an ink scraping structure 2, an ink feeding roller driving device 3, an ink roller group 4, and an ink transfer roller driving device 5; the ink roller group 4 includes an ink receiving roller 7, an ink transfer roller 8, an ink pressing roller 9, and a plate pressing roller 10 arranged parallel to each other; the ink feeding roller 6, the ink receiving roller 7, the ink transfer roller 8, the ink pressing roller 9, and the plate pressing roller 10 are all rotatably supported on the machine frame, and the roller surfaces of adjacent rollers are in close contact with each other to realize the roller surface transfer of ink.

[0019] The ink delivery roller drive device 3 is installed on the side of the frame. The output end of the ink delivery roller drive device 3 is connected to the roller end of the ink delivery roller 6, driving the ink delivery roller 6 to rotate circumferentially to supply ink. The ink distribution roller 8 has two types of motion: one is circumferential rotation, which is achieved by friction between the ink distribution roller 8 and the adjacent ink receiving roller 7 and pressure roller 9, and is a passive motion; the other is axial translational reciprocating motion, which is powered by the ink distribution roller drive device 5. The ink distribution roller drive device 5 only outputs axial pushing and pulling power and does not drive the ink distribution roller 8 to rotate circumferentially.

[0020] The ink delivery roller drive device 5 includes an ink delivery drive motor 11, a turntable 14, a connecting rod 12, and a connecting plate 13. The ink delivery drive motor 11 is fixedly mounted on the frame, and its output shaft is fixedly connected to the center of the turntable 14. One end of the connecting rod 12 is eccentrically hinged to the eccentric position of the turntable 14, and the other end is hinged to the connecting plate 13. The connecting plate 13 is fixedly sleeved and mounted on the end of the ink delivery roller 8. The ink delivery drive motor 11 drives the turntable 14 to rotate, and the connecting rod 12 converts the rotational motion of the turntable 14 into a linear reciprocating push-pull motion, which drives the ink delivery roller 8 to achieve axial translational reciprocating motion through the connecting plate 13. The ink delivery roller drive device 3 and the ink delivery roller drive device 5 are independent of each other, and there are no mechanical transmission coupling components such as gears, drive shafts, or connecting rods between them. This decouples the rotational ink supply action of the ink delivery roller 6 from the axial ink delivery action of the ink delivery roller 8, and they are not bound to each other.

[0021] The ink scraping structure 2 includes a cylinder 16, a push rod 17, and a scraper 18; the cylinder body of the cylinder 16 is fixedly installed on the frame, the push rod 17 is connected to the output end of the cylinder 16, and the output end of the push rod 17 is fixed to the scraper 18; the cylinder 16 drives the scraper 18 to perform a linear reciprocating ink scraping action in the ink trough 1 through the push rod 17.

[0022] Working principle: When the independent drive devices for ink feeding and ink transfer of the curved surface printing cup machine are working, the ink feeding roller drive device independently drives the ink feeding roller to rotate. The ink feeding roller dips into the ink trough, and the ink is sequentially transferred to the ink receiving roller, the ink transfer roller, the ink pressing roller, and finally to the pressure roller to complete the printing ink supply. At the same time, the ink transfer roller drive device's ink transfer drive motor drives the turntable to rotate. The turntable pulls the connecting plate through the eccentrically connected connecting rod, which in turn drives the ink transfer roller to reciprocate and move along its own axis. The axial movement of the ink transfer roller achieves lateral ink uniformity, making the ink distribution on the roller surface uniform.

[0023] The ink supply roller's rotation and ink distribution actions are independent of the axial reciprocating motion of the ink distribution roller, and can be controlled to start and stop separately. When printing does not require ink supply, the ink supply roller drive can be stopped, preventing the ink supply roller from rotating idle and causing friction. The ink distribution roller can still continue to perform axial ink distribution and even ink distribution as needed for printing.

[0024] When the ink scraping mechanism is working, the cylinder drives the push rod to extend and retract. The push rod drives the scraper to make linear reciprocating motion inside the ink tank, scraping and smoothing the ink in the ink tank, maintaining a uniform ink surface inside the ink tank, preventing ink from forming skin and accumulating, and ensuring the stability of ink supply.

[0025] During the printing process, the surfaces of the ink receiving roller, ink transfer roller, ink pressing roller, and plate pressing roller come into contact with each other to complete the step-by-step transfer of ink. Finally, the plate pressing roller transfers the ink to the surface of the cup to be printed to complete the curved surface printing.

[0026] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of this utility model. The technical scope of this utility model is not limited to the contents of the specification. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An independent drive device for ink feeding and ink transfer in a curved surface printing cup machine, characterized in that: It includes an ink delivery roller, an ink trough, a scraper structure, an ink delivery roller drive unit, an ink roller assembly, and an ink distribution roller drive unit. The ink roller assembly includes a receiving roller, an ink distribution roller, an ink pressing roller, and a pressure roller arranged parallel to each other. The ink delivery roller drive unit is connected to the end of the ink delivery roller and drives the ink delivery roller to rotate. The ink distribution roller drive unit drives the ink distribution roller to perform a reciprocating translational motion. There is no mechanical transmission coupling between the ink delivery roller drive unit and the ink distribution roller drive unit; the rotational ink supply action of the ink delivery roller and the axial ink distribution action of the ink distribution roller are decoupled and not bound to each other. The scraper structure performs a reciprocating scraping motion in the ink trough.

2. The independent driving device for ink feeding and ink transfer in a curved surface printing cup machine as described in claim 1, characterized in that: The ink-spreading roller drive device includes an ink-spreading drive motor, a turntable, a connecting rod, and a connecting plate. The output shaft of the ink-spreading drive motor is fixedly connected to the center of the turntable. One end of the connecting rod is eccentrically hinged to the eccentric position of the turntable, and the other end of the connecting rod is hinged to the connecting plate. The connecting plate is fixedly sleeved on the end of the ink-spreading roller body. The ink-spreading drive motor drives the turntable to rotate, the connecting rod is eccentrically connected to the turntable, and the connecting plate is connected to the ink-spreading roller. The ink-spreading drive motor converts the rotational motion of the turntable into the axial reciprocating translation of the ink-spreading roller through the turntable, the eccentric connecting rod, and the connecting plate.

3. The independent driving device for ink feeding and ink transfer in a curved surface printing cup machine as described in claim 1, characterized in that: The described ink scraping structure includes a cylinder, a push rod, and a scraper connected in sequence; the cylinder body is fixed to the frame, the output end of the push rod is fixedly connected to the scraper, and the cylinder drives the scraper to perform linear reciprocating motion through the push rod.

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